TLE42764EV50: A 5.0V Low-Drop Voltage Regulator from Infineon for Robust Automotive and Industrial Applications

In the demanding worlds of automotive electronics and industrial control systems, power supply integrity is non-negotiable. Voltage regulators must deliver unwavering performance under the harshest conditions, including extreme temperatures, voltage transients, and significant electromagnetic interference. Addressing these critical needs, Infineon Technologies has developed the TLE42764EV50, a monolithic fixed 5.0V low-dropout (LDO) voltage regulator that sets a benchmark for robustness and reliability.

This regulator is engineered to provide a stable 5.0V output from an input voltage range of 5.5V to 45V, making it exceptionally versatile for a wide array of applications. Its low dropout voltage of typically 350 mV at a full load current of 400 mA ensures high efficiency, even when the input voltage dips close to the output level. This is crucial in automotive scenarios, such as during cold-crank conditions when the battery voltage can plummet drastically.

A key strength of the TLE42764EV50 lies in its integrated suite of protection features. It includes built-in over-current protection, which safeguards both the IC and the load during fault conditions. The over-temperature protection shuts down the device if the junction temperature exceeds safe limits, preventing thermal runaway. Furthermore, its reverse polarity protection can withstand voltages down to -45V, a common threat in automotive environments during jump-start events with incorrect polarity. The device also boasts an extremely low quiescent current in standby mode, which is vital for modern vehicles with numerous always-on ECUs to prevent battery drain.

Beyond protection, the TLE42764EV50 is designed for superior electromagnetic compatibility (EMC), a mandatory requirement for automotive applications. Its ability to operate reliably in the presence of high-frequency noise ensures that it does not interfere with sensitive radio and communication systems within the vehicle.

The combination of its wide input voltage range, comprehensive protection mechanisms, and high accuracy (±2% output voltage tolerance) makes it an ideal power management solution. It is perfectly suited for powering microcontrollers, sensors, and actuators in severe automotive environments like engine control units (ECUs), transmission systems, and body electronics. Its robustness also translates perfectly to industrial applications, where it can reliably power PLCs, factory automation systems, and measurement equipment subjected to voltage spikes and noisy power lines.

Housed in a PG-TO263-5 package, the regulator offers excellent thermal performance, allowing it to dissipate heat effectively even under high load conditions.

ICGOODFIND: The Infineon TLE42764EV50 is a premier 5V LDO regulator that stands out for its exceptional robustness, comprehensive protection features, and automotive-grade reliability. It is an optimal choice for designers who need a dependable, high-performance power solution for the most challenging applications on the road or on the factory floor.

Keywords: Low-Dropout Regulator, Automotive Grade, Robust Protection, Wide Input Voltage, EMC Performance.